ValueError: Dimensions {'n_points'} do not exist. when opening cfradial file

[aladinor]

• xradar version:
• Python version:
• Operating System:

Hi everyone,

I am using xradar.io.open_cfradial1_datatree to open the x-radar band files that will be used in the ERAD 2024 short course as follows

import xradar as xd

file_path  = "'/media/alfonso/drive/Laura/ERAD/20240522_MeteoSwiss_ARPA_Lombardia/Data/Xband/DES_VOL_RAW_20240522_1745.nc'"

dt= xd.io.open_cfradial1_datatree(file_path)

and the output is

---------------------------------------------------------------------------
ValueError                                Traceback (most recent call last)
Cell In[12], line 1
----> 1 dt_erad = xd.io.open_cfradial1_datatree(xband_files[0])

File [~/mambaforge/envs/kerchunk/lib/python3.12/site-packages/xradar/io/backends/cfradial1.py:355](http://localhost:8888/lab/tree/2022-esip-kerchunk-tutorial/~/mambaforge/envs/kerchunk/lib/python3.12/site-packages/xradar/io/backends/cfradial1.py#line=354), in open_cfradial1_datatree(filename_or_obj, **kwargs)
    349 DataTree(subgroup, name="georeferencing_correction", parent=dtree)
    351 # return datatree with attached sweep child nodes
    352 dtree = _attach_sweep_groups(
    353     dtree,
    354     list(
--> 355         _get_sweep_groups(
    356             ds,
    357             sweep=sweep,
    358             first_dim=first_dim,
    359             optional=optional,
    360             site_coords=site_coords,
    361         ).values()
    362     ),
    363 )
    365 return dtree

File [~/mambaforge/envs/kerchunk/lib/python3.12/site-packages/xradar/io/backends/cfradial1.py:174](http://localhost:8888/lab/tree/2022-esip-kerchunk-tutorial/~/mambaforge/envs/kerchunk/lib/python3.12/site-packages/xradar/io/backends/cfradial1.py#line=173), in _get_sweep_groups(obj, sweep, first_dim, optional, site_coords)
    172 rslice = slice(0, current_ray_n_gates[0].values.astype(int))
    173 ds = ds.isel(range=rslice)
--> 174 ds = ds.isel(n_points=nslice)
    175 ds = ds.stack(n_points=[dim0, "range"])
    176 ds = ds.unstack("n_points")

File [~/mambaforge/envs/kerchunk/lib/python3.12/site-packages/xarray/core/dataset.py:2977](http://localhost:8888/lab/tree/2022-esip-kerchunk-tutorial/~/mambaforge/envs/kerchunk/lib/python3.12/site-packages/xarray/core/dataset.py#line=2976), in Dataset.isel(self, indexers, drop, missing_dims, **indexers_kwargs)
   2973     return self._isel_fancy(indexers, drop=drop, missing_dims=missing_dims)
   2975 # Much faster algorithm for when all indexers are ints, slices, one-dimensional
   2976 # lists, or zero or one-dimensional np.ndarray's
-> 2977 indexers = drop_dims_from_indexers(indexers, self.dims, missing_dims)
   2979 variables = {}
   2980 dims: dict[Hashable, int] = {}

File [~/mambaforge/envs/kerchunk/lib/python3.12/site-packages/xarray/core/utils.py:824](http://localhost:8888/lab/tree/2022-esip-kerchunk-tutorial/~/mambaforge/envs/kerchunk/lib/python3.12/site-packages/xarray/core/utils.py#line=823), in drop_dims_from_indexers(indexers, dims, missing_dims)
    822     invalid = indexers.keys() - set(dims)
    823     if invalid:
--> 824         raise ValueError(
    825             f"Dimensions {invalid} do not exist. Expected one or more of {dims}"
    826         )
    828     return indexers
    830 elif missing_dims == "warn":
    831     # don't modify input

ValueError: Dimensions {'n_points'} do not exist. Expected one or more of FrozenMappingWarningOnValuesAccess({'azimuth': 360, 'range': 416})

Please let me know your thoughts.

[kmuehlbauer]

@aladinor Can you post the output of

$ ncdump -h filename

[aladinor]

netcdf DES_VOL_RAW_20240522_1300 {
dimensions:
	sweep = 8 ;
	time = 2880 ;
	range = 416 ;
	n_points = 1035720 ;
	string_length_8 = 8 ;
	string_length_32 = 32 ;
	status_xml_length = 1 ;
	r_calib = 1 ;
	frequency = 1 ;
variables:
	float fixed_angle(sweep) ;
		fixed_angle:_FillValue = -9999.f ;
		fixed_angle:long_name = "ray_target_fixed_angle" ;
		fixed_angle:units = "degrees" ;
	int sweep_number(sweep) ;
		sweep_number:_FillValue = -9999 ;
		sweep_number:long_name = "sweep_index_number_0_based" ;
		sweep_number:units = "" ;
	int volume_number ;
		volume_number:long_name = "data_volume_index_number" ;
		volume_number:units = "" ;
		volume_number:_FillValue = -9999 ;
	char platform_type(string_length_32) ;
		platform_type:long_name = "platform_type" ;
		platform_type:options = "fixed, vehicle, ship, aircraft_fore, aircraft_aft, aircraft_tail, aircraft_belly, aircraft_roof, aircraft_nose, satellite_orbit, satellite_geostat" ;
	char primary_axis(string_length_32) ;
		primary_axis:long_name = "primary_axis_of_rotation" ;
		primary_axis:options = "axis_z, axis_y, axis_x, axis_z_prime, axis_y_prime, axis_x_prime" ;
	char status_xml(status_xml_length) ;
		status_xml:long_name = "status_of_instrument" ;
	char instrument_type(string_length_32) ;
		instrument_type:long_name = "type_of_instrument" ;
		instrument_type:options = "radar, lidar" ;
		instrument_type:meta_group = "instrument_parameters" ;
	float radar_antenna_gain_h ;
		radar_antenna_gain_h:long_name = "nominal_radar_antenna_gain_h_channel" ;
		radar_antenna_gain_h:units = "db" ;
		radar_antenna_gain_h:_FillValue = -9999.f ;
		radar_antenna_gain_h:meta_group = "radar_parameters" ;
	float radar_antenna_gain_v ;
		radar_antenna_gain_v:long_name = "nominal_radar_antenna_gain_v_channel" ;
		radar_antenna_gain_v:units = "db" ;
		radar_antenna_gain_v:_FillValue = -9999.f ;
		radar_antenna_gain_v:meta_group = "radar_parameters" ;
	float radar_beam_width_h ;
		radar_beam_width_h:long_name = "half_power_radar_beam_width_h_channel" ;
		radar_beam_width_h:units = "degrees" ;
		radar_beam_width_h:_FillValue = -9999.f ;
		radar_beam_width_h:meta_group = "radar_parameters" ;
	float radar_beam_width_v ;
		radar_beam_width_v:long_name = "half_power_radar_beam_width_v_channel" ;
		radar_beam_width_v:units = "degrees" ;
		radar_beam_width_v:_FillValue = -9999.f ;
		radar_beam_width_v:meta_group = "radar_parameters" ;
	float radar_rx_bandwidth ;
		radar_rx_bandwidth:long_name = "radar_receiver_bandwidth" ;
		radar_rx_bandwidth:units = "s-1" ;
		radar_rx_bandwidth:_FillValue = -9999.f ;
		radar_rx_bandwidth:meta_group = "radar_parameters" ;
	char time_coverage_start(string_length_32) ;
		time_coverage_start:long_name = "data_volume_start_time_utc" ;
		time_coverage_start:comment = "ray times are relative to start time in secs" ;
	char time_coverage_end(string_length_32) ;
		time_coverage_end:long_name = "data_volume_end_time_utc" ;
	float frequency(frequency) ;
		frequency:long_name = "transmission_frequency" ;
		frequency:units = "s-1" ;
		frequency:_FillValue = -9999.f ;
		frequency:meta_group = "instrument_parameters" ;
	int grid_mapping ;
		grid_mapping:grid_mapping_name = "radar_lidar_radial_scan" ;
		grid_mapping:longitude_of_projection_origin = 9.1963180527091 ;
		grid_mapping:latitude_of_projection_origin = 45.6272660940886 ;
		grid_mapping:altitude_of_projection_origin = 241. ;
		grid_mapping:false_northing = 0. ;
		grid_mapping:false_easting = 0. ;
	double latitude ;
		latitude:long_name = "latitude" ;
		latitude:units = "degrees_north" ;
		latitude:_FillValue = -9999. ;
	double longitude ;
		longitude:long_name = "longitude" ;
		longitude:units = "degrees_east" ;
		longitude:_FillValue = -9999. ;
	double altitude ;
		altitude:long_name = "altitude" ;
		altitude:units = "meters" ;
		altitude:_FillValue = -9999. ;
		altitude:positive = "up" ;
	double altitude_agl ;
		altitude_agl:long_name = "altitude_above_ground_level" ;
		altitude_agl:units = "meters" ;
		altitude_agl:_FillValue = -9999. ;
		altitude_agl:positive = "up" ;
	char sweep_mode(sweep, string_length_32) ;
		sweep_mode:long_name = "scan_mode_for_sweep" ;
		sweep_mode:options = "sector, coplane, rhi, vertical_pointing, idle, azimuth_surveillance, elevation_surveillance, sunscan, pointing, calibration, manual_ppi, manual_rhi, sunscan_rhi, doppler_beam_swinging, complex_trajectory, electronic_steering" ;
	char polarization_mode(sweep, string_length_32) ;
		polarization_mode:long_name = "polarization_mode_for_sweep" ;
		polarization_mode:options = "horizontal, vertical, hv_alt, hv_sim, circular" ;
		polarization_mode:meta_group = "radar_parameters" ;
	char prt_mode(sweep, string_length_32) ;
		prt_mode:long_name = "transmit_pulse_mode" ;
		prt_mode:options = "fixed, staggered, dual" ;
		prt_mode:meta_group = "radar_parameters" ;
	char follow_mode(sweep, string_length_32) ;
		follow_mode:long_name = "follow_mode_for_scan_strategy" ;
		follow_mode:options = "none, sun, vehicle, aircraft, target, manual" ;
		follow_mode:meta_group = "instrument_parameters" ;
	float target_scan_rate(sweep) ;
		target_scan_rate:long_name = "target_scan_rate_for_sweep" ;
		target_scan_rate:units = "degrees per second" ;
		target_scan_rate:_FillValue = -9999.f ;
	int sweep_start_ray_index(sweep) ;
		sweep_start_ray_index:long_name = "index_of_first_ray_in_sweep" ;
		sweep_start_ray_index:units = "" ;
		sweep_start_ray_index:_FillValue = -9999 ;
	int sweep_end_ray_index(sweep) ;
		sweep_end_ray_index:long_name = "index_of_last_ray_in_sweep" ;
		sweep_end_ray_index:units = "" ;
		sweep_end_ray_index:_FillValue = -9999 ;
	char rays_are_indexed(sweep, string_length_8) ;
		rays_are_indexed:long_name = "flag_for_indexed_rays" ;
	float ray_angle_res(sweep) ;
		ray_angle_res:long_name = "angular_resolution_between_rays" ;
		ray_angle_res:units = "degrees" ;
		ray_angle_res:_FillValue = -9999.f ;
	char r_calib_time(r_calib, string_length_32) ;
		r_calib_time:long_name = "radar_calibration_time_utc" ;
		r_calib_time:meta_group = "radar_calibration" ;
	float r_calib_pulse_width(r_calib) ;
		r_calib_pulse_width:long_name = "radar_calibration_pulse_width" ;
		r_calib_pulse_width:units = "seconds" ;
		r_calib_pulse_width:meta_group = "radar_calibration" ;
		r_calib_pulse_width:_FillValue = -9999.f ;
	float r_calib_xmit_power_h(r_calib) ;
		r_calib_xmit_power_h:long_name = "calibrated_radar_xmit_power_h_channel" ;
		r_calib_xmit_power_h:units = "dBm" ;
		r_calib_xmit_power_h:meta_group = "radar_calibration" ;
		r_calib_xmit_power_h:_FillValue = -9999.f ;
	float r_calib_xmit_power_v(r_calib) ;
		r_calib_xmit_power_v:long_name = "calibrated_radar_xmit_power_v_channel" ;
		r_calib_xmit_power_v:units = "dBm" ;
		r_calib_xmit_power_v:meta_group = "radar_calibration" ;
		r_calib_xmit_power_v:_FillValue = -9999.f ;
	float r_calib_two_way_waveguide_loss_h(r_calib) ;
		r_calib_two_way_waveguide_loss_h:long_name = "radar_calibration_two_way_waveguide_loss_h_channel" ;
		r_calib_two_way_waveguide_loss_h:units = "db" ;
		r_calib_two_way_waveguide_loss_h:meta_group = "radar_calibration" ;
		r_calib_two_way_waveguide_loss_h:_FillValue = -9999.f ;
	float r_calib_two_way_waveguide_loss_v(r_calib) ;
		r_calib_two_way_waveguide_loss_v:long_name = "radar_calibration_two_way_waveguide_loss_v_channel" ;
		r_calib_two_way_waveguide_loss_v:units = "db" ;
		r_calib_two_way_waveguide_loss_v:meta_group = "radar_calibration" ;
		r_calib_two_way_waveguide_loss_v:_FillValue = -9999.f ;
	float r_calib_two_way_radome_loss_h(r_calib) ;
		r_calib_two_way_radome_loss_h:long_name = "radar_calibration_two_way_radome_loss_h_channel" ;
		r_calib_two_way_radome_loss_h:units = "db" ;
		r_calib_two_way_radome_loss_h:meta_group = "radar_calibration" ;
		r_calib_two_way_radome_loss_h:_FillValue = -9999.f ;
	float r_calib_two_way_radome_loss_v(r_calib) ;
		r_calib_two_way_radome_loss_v:long_name = "radar_calibration_two_way_radome_loss_v_channel" ;
		r_calib_two_way_radome_loss_v:units = "db" ;
		r_calib_two_way_radome_loss_v:meta_group = "radar_calibration" ;
		r_calib_two_way_radome_loss_v:_FillValue = -9999.f ;
	float r_calib_receiver_mismatch_loss(r_calib) ;
		r_calib_receiver_mismatch_loss:long_name = "radar_calibration_receiver_mismatch_loss" ;
		r_calib_receiver_mismatch_loss:units = "db" ;
		r_calib_receiver_mismatch_loss:meta_group = "radar_calibration" ;
		r_calib_receiver_mismatch_loss:_FillValue = -9999.f ;
	float r_calib_k_squared_water(r_calib) ;
		r_calib_k_squared_water:long_name = "r_calib_k_squared_water" ;
		r_calib_k_squared_water:units = "" ;
		r_calib_k_squared_water:meta_group = "radar_calibration" ;
		r_calib_k_squared_water:_FillValue = -9999.f ;
	float r_calib_radar_constant_h(r_calib) ;
		r_calib_radar_constant_h:long_name = "calibrated_radar_constant_h_channel" ;
		r_calib_radar_constant_h:units = "db" ;
		r_calib_radar_constant_h:meta_group = "radar_calibration" ;
		r_calib_radar_constant_h:_FillValue = -9999.f ;
	float r_calib_radar_constant_v(r_calib) ;
		r_calib_radar_constant_v:long_name = "calibrated_radar_constant_v_channel" ;
		r_calib_radar_constant_v:units = "db" ;
		r_calib_radar_constant_v:meta_group = "radar_calibration" ;
		r_calib_radar_constant_v:_FillValue = -9999.f ;
	float r_calib_antenna_gain_h(r_calib) ;
		r_calib_antenna_gain_h:long_name = "calibrated_radar_antenna_gain_h_channel" ;
		r_calib_antenna_gain_h:units = "db" ;
		r_calib_antenna_gain_h:meta_group = "radar_calibration" ;
		r_calib_antenna_gain_h:_FillValue = -9999.f ;
	float r_calib_antenna_gain_v(r_calib) ;
		r_calib_antenna_gain_v:long_name = "calibrated_radar_antenna_gain_v_channel" ;
		r_calib_antenna_gain_v:units = "db" ;
		r_calib_antenna_gain_v:meta_group = "radar_calibration" ;
		r_calib_antenna_gain_v:_FillValue = -9999.f ;
	float r_calib_noise_hc(r_calib) ;
		r_calib_noise_hc:long_name = "calibrated_radar_receiver_noise_h_co_polar_channel" ;
		r_calib_noise_hc:units = "dBm" ;
		r_calib_noise_hc:meta_group = "radar_calibration" ;
		r_calib_noise_hc:_FillValue = -9999.f ;
	float r_calib_noise_vc(r_calib) ;
		r_calib_noise_vc:long_name = "calibrated_radar_receiver_noise_v_co_polar_channel" ;
		r_calib_noise_vc:units = "dBm" ;
		r_calib_noise_vc:meta_group = "radar_calibration" ;
		r_calib_noise_vc:_FillValue = -9999.f ;
	float r_calib_noise_hx(r_calib) ;
		r_calib_noise_hx:long_name = "calibrated_radar_receiver_noise_h_cross_polar_channel" ;
		r_calib_noise_hx:units = "dBm" ;
		r_calib_noise_hx:meta_group = "radar_calibration" ;
		r_calib_noise_hx:_FillValue = -9999.f ;
	float r_calib_noise_vx(r_calib) ;
		r_calib_noise_vx:long_name = "calibrated_radar_receiver_noise_v_cross_polar_channel" ;
		r_calib_noise_vx:units = "dBm" ;
		r_calib_noise_vx:meta_group = "radar_calibration" ;
		r_calib_noise_vx:_FillValue = -9999.f ;
	float r_calib_i0_dbm_hc(r_calib) ;
		r_calib_i0_dbm_hc:long_name = "r_calib_i0_dbm_hc" ;
		r_calib_i0_dbm_hc:units = "dBm" ;
		r_calib_i0_dbm_hc:meta_group = "radar_calibration" ;
		r_calib_i0_dbm_hc:_FillValue = -9999.f ;
	float r_calib_i0_dbm_vc(r_calib) ;
		r_calib_i0_dbm_vc:long_name = "r_calib_i0_dbm_vc" ;
		r_calib_i0_dbm_vc:units = "dBm" ;
		r_calib_i0_dbm_vc:meta_group = "radar_calibration" ;
		r_calib_i0_dbm_vc:_FillValue = -9999.f ;
	float r_calib_i0_dbm_hx(r_calib) ;
		r_calib_i0_dbm_hx:long_name = "r_calib_i0_dbm_hx" ;
		r_calib_i0_dbm_hx:units = "dBm" ;
		r_calib_i0_dbm_hx:meta_group = "radar_calibration" ;
		r_calib_i0_dbm_hx:_FillValue = -9999.f ;
	float r_calib_i0_dbm_vx(r_calib) ;
		r_calib_i0_dbm_vx:long_name = "r_calib_i0_dbm_vx" ;
		r_calib_i0_dbm_vx:units = "dBm" ;
		r_calib_i0_dbm_vx:meta_group = "radar_calibration" ;
		r_calib_i0_dbm_vx:_FillValue = -9999.f ;
	float r_calib_receiver_gain_hc(r_calib) ;
		r_calib_receiver_gain_hc:long_name = "calibrated_radar_receiver_gain_h_co_polar_channel" ;
		r_calib_receiver_gain_hc:units = "db" ;
		r_calib_receiver_gain_hc:meta_group = "radar_calibration" ;
		r_calib_receiver_gain_hc:_FillValue = -9999.f ;
	float r_calib_receiver_gain_vc(r_calib) ;
		r_calib_receiver_gain_vc:long_name = "calibrated_radar_receiver_gain_v_co_polar_channel" ;
		r_calib_receiver_gain_vc:units = "db" ;
		r_calib_receiver_gain_vc:meta_group = "radar_calibration" ;
		r_calib_receiver_gain_vc:_FillValue = -9999.f ;
	float r_calib_receiver_gain_hx(r_calib) ;
		r_calib_receiver_gain_hx:long_name = "calibrated_radar_receiver_gain_h_cross_polar_channel" ;
		r_calib_receiver_gain_hx:units = "db" ;
		r_calib_receiver_gain_hx:meta_group = "radar_calibration" ;
		r_calib_receiver_gain_hx:_FillValue = -9999.f ;
	float r_calib_receiver_gain_vx(r_calib) ;
		r_calib_receiver_gain_vx:long_name = "calibrated_radar_receiver_gain_v_cross_polar_channel" ;
		r_calib_receiver_gain_vx:units = "db" ;
		r_calib_receiver_gain_vx:meta_group = "radar_calibration" ;
		r_calib_receiver_gain_vx:_FillValue = -9999.f ;
	float r_calib_receiver_slope_hc(r_calib) ;
		r_calib_receiver_slope_hc:long_name = "calibrated_radar_receiver_slope_h_co_polar_channel" ;
		r_calib_receiver_slope_hc:units = "" ;
		r_calib_receiver_slope_hc:meta_group = "radar_calibration" ;
		r_calib_receiver_slope_hc:_FillValue = -9999.f ;
	float r_calib_receiver_slope_vc(r_calib) ;
		r_calib_receiver_slope_vc:long_name = "calibrated_radar_receiver_slope_v_co_polar_channel" ;
		r_calib_receiver_slope_vc:units = "" ;
		r_calib_receiver_slope_vc:meta_group = "radar_calibration" ;
		r_calib_receiver_slope_vc:_FillValue = -9999.f ;
	float r_calib_receiver_slope_hx(r_calib) ;
		r_calib_receiver_slope_hx:long_name = "calibrated_radar_receiver_slope_h_cross_polar_channel" ;
		r_calib_receiver_slope_hx:units = "" ;
		r_calib_receiver_slope_hx:meta_group = "radar_calibration" ;
		r_calib_receiver_slope_hx:_FillValue = -9999.f ;
	float r_calib_receiver_slope_vx(r_calib) ;
		r_calib_receiver_slope_vx:long_name = "calibrated_radar_receiver_slope_v_cross_polar_channel" ;
		r_calib_receiver_slope_vx:units = "" ;
		r_calib_receiver_slope_vx:meta_group = "radar_calibration" ;
		r_calib_receiver_slope_vx:_FillValue = -9999.f ;
	float r_calib_dynamic_range_db_hc(r_calib) ;
		r_calib_dynamic_range_db_hc:long_name = "r_calib_dynamic_range_db_hc" ;
		r_calib_dynamic_range_db_hc:units = "db" ;
		r_calib_dynamic_range_db_hc:meta_group = "radar_calibration" ;
		r_calib_dynamic_range_db_hc:_FillValue = -9999.f ;
	float r_calib_dynamic_range_db_vc(r_calib) ;
		r_calib_dynamic_range_db_vc:long_name = "r_calib_dynamic_range_db_vc" ;
		r_calib_dynamic_range_db_vc:units = "db" ;
		r_calib_dynamic_range_db_vc:meta_group = "radar_calibration" ;
		r_calib_dynamic_range_db_vc:_FillValue = -9999.f ;
	float r_calib_dynamic_range_db_hx(r_calib) ;
		r_calib_dynamic_range_db_hx:long_name = "r_calib_dynamic_range_db_hx" ;
		r_calib_dynamic_range_db_hx:units = "db" ;
		r_calib_dynamic_range_db_hx:meta_group = "radar_calibration" ;
		r_calib_dynamic_range_db_hx:_FillValue = -9999.f ;
	float r_calib_dynamic_range_db_vx(r_calib) ;
		r_calib_dynamic_range_db_vx:long_name = "r_calib_dynamic_range_db_vx" ;
		r_calib_dynamic_range_db_vx:units = "db" ;
		r_calib_dynamic_range_db_vx:meta_group = "radar_calibration" ;
		r_calib_dynamic_range_db_vx:_FillValue = -9999.f ;
	float r_calib_base_dbz_1km_hc(r_calib) ;
		r_calib_base_dbz_1km_hc:long_name = "radar_reflectivity_at_1km_at_zero_snr_h_co_polar_channel" ;
		r_calib_base_dbz_1km_hc:units = "dBZ" ;
		r_calib_base_dbz_1km_hc:meta_group = "radar_calibration" ;
		r_calib_base_dbz_1km_hc:_FillValue = -9999.f ;
	float r_calib_base_dbz_1km_vc(r_calib) ;
		r_calib_base_dbz_1km_vc:long_name = "radar_reflectivity_at_1km_at_zero_snr_v_co_polar_channel" ;
		r_calib_base_dbz_1km_vc:units = "dBZ" ;
		r_calib_base_dbz_1km_vc:meta_group = "radar_calibration" ;
		r_calib_base_dbz_1km_vc:_FillValue = -9999.f ;
	float r_calib_base_dbz_1km_hx(r_calib) ;
		r_calib_base_dbz_1km_hx:long_name = "radar_reflectivity_at_1km_at_zero_snr_h_cross_polar_channel" ;
		r_calib_base_dbz_1km_hx:units = "dBZ" ;
		r_calib_base_dbz_1km_hx:meta_group = "radar_calibration" ;
		r_calib_base_dbz_1km_hx:_FillValue = -9999.f ;
	float r_calib_base_dbz_1km_vx(r_calib) ;
		r_calib_base_dbz_1km_vx:long_name = "radar_reflectivity_at_1km_at_zero_snr_v_cross_polar_channel" ;
		r_calib_base_dbz_1km_vx:units = "dBZ" ;
		r_calib_base_dbz_1km_vx:meta_group = "radar_calibration" ;
		r_calib_base_dbz_1km_vx:_FillValue = -9999.f ;
	float r_calib_sun_power_hc(r_calib) ;
		r_calib_sun_power_hc:long_name = "calibrated_radar_sun_power_h_co_polar_channel" ;
		r_calib_sun_power_hc:units = "dBm" ;
		r_calib_sun_power_hc:meta_group = "radar_calibration" ;
		r_calib_sun_power_hc:_FillValue = -9999.f ;
	float r_calib_sun_power_vc(r_calib) ;
		r_calib_sun_power_vc:long_name = "calibrated_radar_sun_power_v_co_polar_channel" ;
		r_calib_sun_power_vc:units = "dBm" ;
		r_calib_sun_power_vc:meta_group = "radar_calibration" ;
		r_calib_sun_power_vc:_FillValue = -9999.f ;
	float r_calib_sun_power_hx(r_calib) ;
		r_calib_sun_power_hx:long_name = "calibrated_radar_sun_power_h_cross_polar_channel" ;
		r_calib_sun_power_hx:units = "dBm" ;
		r_calib_sun_power_hx:meta_group = "radar_calibration" ;
		r_calib_sun_power_hx:_FillValue = -9999.f ;
	float r_calib_sun_power_vx(r_calib) ;
		r_calib_sun_power_vx:long_name = "calibrated_radar_sun_power_v_cross_polar_channel" ;
		r_calib_sun_power_vx:units = "dBm" ;
		r_calib_sun_power_vx:meta_group = "radar_calibration" ;
		r_calib_sun_power_vx:_FillValue = -9999.f ;
	float r_calib_noise_source_power_h(r_calib) ;
		r_calib_noise_source_power_h:long_name = "radar_calibration_noise_source_power_h_channel" ;
		r_calib_noise_source_power_h:units = "dBm" ;
		r_calib_noise_source_power_h:meta_group = "radar_calibration" ;
		r_calib_noise_source_power_h:_FillValue = -9999.f ;
	float r_calib_noise_source_power_v(r_calib) ;
		r_calib_noise_source_power_v:long_name = "radar_calibration_noise_source_power_v_channel" ;
		r_calib_noise_source_power_v:units = "dBm" ;
		r_calib_noise_source_power_v:meta_group = "radar_calibration" ;
		r_calib_noise_source_power_v:_FillValue = -9999.f ;
	float r_calib_power_measure_loss_h(r_calib) ;
		r_calib_power_measure_loss_h:long_name = "radar_calibration_power_measurement_loss_h_channel" ;
		r_calib_power_measure_loss_h:units = "db" ;
		r_calib_power_measure_loss_h:meta_group = "radar_calibration" ;
		r_calib_power_measure_loss_h:_FillValue = -9999.f ;
	float r_calib_power_measure_loss_v(r_calib) ;
		r_calib_power_measure_loss_v:long_name = "radar_calibration_power_measurement_loss_v_channel" ;
		r_calib_power_measure_loss_v:units = "db" ;
		r_calib_power_measure_loss_v:meta_group = "radar_calibration" ;
		r_calib_power_measure_loss_v:_FillValue = -9999.f ;
	float r_calib_coupler_forward_loss_h(r_calib) ;
		r_calib_coupler_forward_loss_h:long_name = "radar_calibration_coupler_forward_loss_h_channel" ;
		r_calib_coupler_forward_loss_h:units = "db" ;
		r_calib_coupler_forward_loss_h:meta_group = "radar_calibration" ;
		r_calib_coupler_forward_loss_h:_FillValue = -9999.f ;
	float r_calib_coupler_forward_loss_v(r_calib) ;
		r_calib_coupler_forward_loss_v:long_name = "radar_calibration_coupler_forward_loss_v_channel" ;
		r_calib_coupler_forward_loss_v:units = "db" ;
		r_calib_coupler_forward_loss_v:meta_group = "radar_calibration" ;
		r_calib_coupler_forward_loss_v:_FillValue = -9999.f ;
	float r_calib_dbz_correction(r_calib) ;
		r_calib_dbz_correction:long_name = "calibrated_radar_dbz_correction" ;
		r_calib_dbz_correction:units = "db" ;
		r_calib_dbz_correction:meta_group = "radar_calibration" ;
		r_calib_dbz_correction:_FillValue = -9999.f ;
	float r_calib_zdr_correction(r_calib) ;
		r_calib_zdr_correction:long_name = "calibrated_radar_zdr_correction" ;
		r_calib_zdr_correction:units = "db" ;
		r_calib_zdr_correction:meta_group = "radar_calibration" ;
		r_calib_zdr_correction:_FillValue = -9999.f ;
	float r_calib_ldr_correction_h(r_calib) ;
		r_calib_ldr_correction_h:long_name = "calibrated_radar_ldr_correction_h_channel" ;
		r_calib_ldr_correction_h:units = "db" ;
		r_calib_ldr_correction_h:meta_group = "radar_calibration" ;
		r_calib_ldr_correction_h:_FillValue = -9999.f ;
	float r_calib_ldr_correction_v(r_calib) ;
		r_calib_ldr_correction_v:long_name = "calibrated_radar_ldr_correction_v_channel" ;
		r_calib_ldr_correction_v:units = "db" ;
		r_calib_ldr_correction_v:meta_group = "radar_calibration" ;
		r_calib_ldr_correction_v:_FillValue = -9999.f ;
	float r_calib_system_phidp(r_calib) ;
		r_calib_system_phidp:long_name = "calibrated_radar_system_phidp" ;
		r_calib_system_phidp:units = "degrees" ;
		r_calib_system_phidp:meta_group = "radar_calibration" ;
		r_calib_system_phidp:_FillValue = -9999.f ;
	float r_calib_test_power_h(r_calib) ;
		r_calib_test_power_h:long_name = "radar_calibration_test_power_h_channel" ;
		r_calib_test_power_h:units = "dBm" ;
		r_calib_test_power_h:meta_group = "radar_calibration" ;
		r_calib_test_power_h:_FillValue = -9999.f ;
	float r_calib_test_power_v(r_calib) ;
		r_calib_test_power_v:long_name = "radar_calibration_test_power_v_channel" ;
		r_calib_test_power_v:units = "dBm" ;
		r_calib_test_power_v:meta_group = "radar_calibration" ;
		r_calib_test_power_v:_FillValue = -9999.f ;
	double time(time) ;
		time:standard_name = "time" ;
		time:long_name = "time in seconds since volume start" ;
		time:calendar = "gregorian" ;
		time:units = "seconds since 2024-05-22T13:00:46Z" ;
		time:comment = "times are relative to the volume start_time" ;
	float range(range) ;
		range:long_name = "Range from instrument to center of gate" ;
		range:units = "meters" ;
		range:spacing_is_constant = "true" ;
		range:meters_to_center_of_first_gate = 150.000005960464 ;
		range:meters_between_gates = 300.000011920929 ;
	int ray_n_gates(time) ;
		ray_n_gates:long_name = "number_of_gates" ;
		ray_n_gates:units = "" ;
		ray_n_gates:_FillValue = -9999 ;
	int ray_start_index(time) ;
		ray_start_index:long_name = "array_index_to_start_of_ray" ;
		ray_start_index:units = "" ;
		ray_start_index:_FillValue = -9999 ;
	float ray_start_range(time) ;
		ray_start_range:long_name = "start_range_for_ray" ;
		ray_start_range:units = "meters" ;
		ray_start_range:_FillValue = -9999.f ;
	float ray_gate_spacing(time) ;
		ray_gate_spacing:long_name = "gate_spacing_for_ray" ;
		ray_gate_spacing:units = "meters" ;
		ray_gate_spacing:_FillValue = -9999.f ;
	float azimuth(time) ;
		azimuth:long_name = "ray_azimuth_angle" ;
		azimuth:units = "degrees" ;
		azimuth:_FillValue = -9999.f ;
	float elevation(time) ;
		elevation:long_name = "ray_elevation_angle" ;
		elevation:units = "degrees" ;
		elevation:_FillValue = -9999.f ;
		elevation:positive = "up" ;
	float pulse_width(time) ;
		pulse_width:long_name = "transmitter_pulse_width" ;
		pulse_width:units = "seconds" ;
		pulse_width:_FillValue = -9999.f ;
		pulse_width:meta_group = "instrument_parameters" ;
	float prt(time) ;
		prt:long_name = "pulse_repetition_time" ;
		prt:units = "seconds" ;
		prt:_FillValue = -9999.f ;
		prt:meta_group = "instrument_parameters" ;
	float prt_ratio(time) ;
		prt_ratio:long_name = "pulse_repetition_frequency_ratio" ;
		prt_ratio:units = "seconds" ;
		prt_ratio:_FillValue = -9999.f ;
		prt_ratio:meta_group = "instrument_parameters" ;
	float nyquist_velocity(time) ;
		nyquist_velocity:long_name = "unambiguous_doppler_velocity" ;
		nyquist_velocity:units = "meters per second" ;
		nyquist_velocity:_FillValue = -9999.f ;
		nyquist_velocity:meta_group = "instrument_parameters" ;
	float unambiguous_range(time) ;
		unambiguous_range:long_name = "unambiguous_range" ;
		unambiguous_range:units = "meters" ;
		unambiguous_range:_FillValue = -9999.f ;
		unambiguous_range:meta_group = "instrument_parameters" ;
	byte antenna_transition(time) ;
		antenna_transition:long_name = "antenna_is_in_transition_between_sweeps" ;
		antenna_transition:units = "" ;
		antenna_transition:_FillValue = -128b ;
		antenna_transition:comment = "1 if antenna is in transition, 0 otherwise" ;
	int n_samples(time) ;
		n_samples:long_name = "number_of_samples_used_to_compute_moments" ;
		n_samples:units = "" ;
		n_samples:_FillValue = -9999 ;
		n_samples:meta_group = "instrument_parameters" ;
	int r_calib_index(time) ;
		r_calib_index:long_name = "calibration_data_array_index_per_ray" ;
		r_calib_index:units = "" ;
		r_calib_index:_FillValue = -9999 ;
		r_calib_index:meta_group = "radar_calibration" ;
		r_calib_index:comment = "This is the index for the calibration which applies to this ray" ;
	float measured_transmit_power_h(time) ;
		measured_transmit_power_h:long_name = "measured_radar_transmit_power_h_channel" ;
		measured_transmit_power_h:units = "dBm" ;
		measured_transmit_power_h:_FillValue = -9999.f ;
		measured_transmit_power_h:meta_group = "radar_parameters" ;
	float measured_transmit_power_v(time) ;
		measured_transmit_power_v:long_name = "measured_radar_transmit_power_v_channel" ;
		measured_transmit_power_v:units = "dBm" ;
		measured_transmit_power_v:_FillValue = -9999.f ;
		measured_transmit_power_v:meta_group = "radar_parameters" ;
	float scan_rate(time) ;
		scan_rate:long_name = "antenna_angle_scan_rate" ;
		scan_rate:units = "degrees per second" ;
		scan_rate:_FillValue = -9999.f ;
		scan_rate:meta_group = "instrument_parameters" ;
	short DBZ_TOT(n_points) ;
		DBZ_TOT:units = "dBZ" ;
		DBZ_TOT:sampling_ratio = 1.f ;
		DBZ_TOT:_FillValue = -32768s ;
		DBZ_TOT:scale_factor = 0.01f ;
		DBZ_TOT:add_offset = 0.f ;
		DBZ_TOT:grid_mapping = "grid_mapping" ;
		DBZ_TOT:coordinates = "time range" ;
	short DBZ(n_points) ;
		DBZ:units = "dBZ" ;
		DBZ:sampling_ratio = 1.f ;
		DBZ:_FillValue = -32768s ;
		DBZ:scale_factor = 0.01f ;
		DBZ:add_offset = 0.f ;
		DBZ:grid_mapping = "grid_mapping" ;
		DBZ:coordinates = "time range" ;
		DBZ:maxDBZInRaw = "{\'dbz99\': \'39.6\', \'dbzMax\': \'59.6\'}" ;
	short VEL(n_points) ;
		VEL:units = "m/s" ;
		VEL:sampling_ratio = 1.f ;
		VEL:_FillValue = -32768s ;
		VEL:scale_factor = 0.01f ;
		VEL:add_offset = 0.f ;
		VEL:grid_mapping = "grid_mapping" ;
		VEL:coordinates = "time range" ;
	short WIDTH(n_points) ;
		WIDTH:units = "m/s" ;
		WIDTH:sampling_ratio = 1.f ;
		WIDTH:_FillValue = -32768s ;
		WIDTH:scale_factor = 0.01f ;
		WIDTH:add_offset = 327.68f ;
		WIDTH:grid_mapping = "grid_mapping" ;
		WIDTH:coordinates = "time range" ;
	short ZDR(n_points) ;
		ZDR:units = "dB" ;
		ZDR:sampling_ratio = 1.f ;
		ZDR:_FillValue = -32768s ;
		ZDR:scale_factor = 0.01f ;
		ZDR:add_offset = 0.f ;
		ZDR:grid_mapping = "grid_mapping" ;
		ZDR:coordinates = "time range" ;
	short KDP(n_points) ;
		KDP:units = "deg/km" ;
		KDP:sampling_ratio = 1.f ;
		KDP:_FillValue = -32768s ;
		KDP:scale_factor = 0.01f ;
		KDP:add_offset = 0.f ;
		KDP:grid_mapping = "grid_mapping" ;
		KDP:coordinates = "time range" ;
	short RHOHV(n_points) ;
		RHOHV:units = "" ;
		RHOHV:sampling_ratio = 1.f ;
		RHOHV:_FillValue = -32768s ;
		RHOHV:scale_factor = 1.525949e-05f ;
		RHOHV:add_offset = 0.5000076f ;
		RHOHV:grid_mapping = "grid_mapping" ;
		RHOHV:coordinates = "time range" ;
	short PHIDP(n_points) ;
		PHIDP:units = "deg" ;
		PHIDP:sampling_ratio = 1.f ;
		PHIDP:_FillValue = -32768s ;
		PHIDP:scale_factor = 0.005493332f ;
		PHIDP:add_offset = 180.f ;
		PHIDP:grid_mapping = "grid_mapping" ;
		PHIDP:coordinates = "time range" ;
	short HCLASS(n_points) ;
		HCLASS:units = "" ;
		HCLASS:sampling_ratio = 1.f ;
		HCLASS:_FillValue = -32768s ;
		HCLASS:scale_factor = 1.f ;
		HCLASS:add_offset = 32768.f ;
		HCLASS:grid_mapping = "grid_mapping" ;
		HCLASS:coordinates = "time range" ;
	short MCSSX(n_points) ;
		MCSSX:_FillValue = -32768s ;
		MCSSX:units = "" ;
		MCSSX:grid_mapping = "grid_mapping" ;
		MCSSX:coordinates = "time range" ;
		MCSSX:legend = "{0: \'NoMetClttr\', 1: \'NoMetBioExtd\', 2: \'MetRain\', 3: \'MetWetSnow\', 4: \'MetSnow\', 5: \'MetGraupel\', 6: \'MetHail\'}" ;
		MCSSX:countInRaw = "{\'NoData\': 747333, \'NoMetClttr\': 14711, \'NoMetBioExtd\': 126679, \'MetRain\': 17619, \'MetWetSnow\': 13618, \'MetSnow\': 102587, \'MetGraupel\': 12766, \'MetHail\': 407, \'PercentValidData\': \'27.84\'}" ;

// global attributes:
		:Conventions = "CF-1.7" ;
		:Sub_conventions = "CF-Radial instrument_parameters radar_parameters radar_calibration" ;
		:version = "CF-Radial-1.4" ;
		:title = "VOL_A" ;
		:institution = "" ;
		:references = "Conversion software: Radx::SigmetRadxFile" ;
		:source = "Sigmet IRIS software" ;
		:comment = "" ;
		:original_format = "SIGMETRAW" ;
		:driver = "RadxConvert(NCAR)" ;
		:created = "2024/05/22 13:32:02.801" ;
		:start_datetime = "2024-05-22T13:00:46Z" ;
		:time_coverage_start = "2024-05-22T13:00:46Z" ;
		:start_time = "2024-05-22 13:00:46.849" ;
		:end_datetime = "2024-05-22T13:03:19Z" ;
		:time_coverage_end = "2024-05-22T13:03:19Z" ;
		:end_time = "2024-05-22 13:03:19.983" ;
		:instrument_name = "Desio_Radar" ;
		:site_name = "Desio_Radar" ;
		:scan_name = "VOL_A" ;
		:scan_id = 0 ;
		:platform_is_mobile = "false" ;
		:n_gates_vary = "true" ;
		:ray_times_increase = "true" ;
		:NCO = "netCDF Operators version 4.9.7 (Homepage = http://nco.sf.net, Code = http://github.com/nco/nco)" ;
		:history = "Wed May 22 13:32:05 2024: ncap2 -Os fixed_angle  (:)={0.7,1.3,3.0,5.0,7.0,10.0,15.0,25.0} /data/out/sigmet/realtime/20240522/DES/VOL/DES_VOL_RAW_20240522_1300.corr.nc /data/out/sigmet/realtime/20240522/DES/VOL/DES_VOL_RAW_20240522_1300.corr2.nc\nWed May 22 13:32:04 2024: ncap2 -Os sweep_number  (:)={0,1,2,3,4,5,6,7} /data/out/sigmet/realtime/20240522/DES/VOL/DES_VOL_RAW_20240522_1300.nc /data/out/sigmet/realtime/20240522/DES/VOL/DES_VOL_RAW_20240522_1300.corr.nc\nSigmet RAW file: ; get_percentile_nc.py: maxDBZInRaw = {\"dbz99\": \"39.6\", \"dbzMax\": \"59.6\"}; get_percentile_nc.py: legend MCSSX= {0: \"NoMetClttr\", 1: \"NoMetBioExtd\", 2: \"MetRain\", 3: \"MetWetSnow\", 4: \"MetSnow\", 5: \"MetGraupel\", 6: \"MetHail\"}; get_percentile_nc.py: countInRaw MCSSX= {\"NoData\": 747333, \"NoMetClttr\": 14711, \"NoMetBioExtd\": 126679, \"MetRain\": 17619, \"MetWetSnow\": 13618, \"MetSnow\": 102587, \"MetGraupel\": 12766, \"MetHail\": 407, \"PercentValidData\": \"27.84\"}; get_percentile_nc.py: meltingLevelMslM = {\'ave\': 2796.5, \'min\': 2700.0, \'max\': 2800.0}" ;
}

[kmuehlbauer]

@aladinor You've been tripped by a bug here. I'm working on a fix atm.

[kmuehlbauer]

@aladinor I've added a fix in #190, and release v0.6.1 with this. It should be available in conda-forge soon conda-forge/xradar-feedstock#21.

[aladinor]

Thanks, @kmuehlbauer. ERAD data is now available in ARCO format. We just need to upload it to the bucket.